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Service bulletin MC230121

A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.

The communication, as NHTSA indexes it (as of 2026-10-19)
TypeService bulletin
NHTSA id10190879
Published by NHTSA2021-04-26
Manufacturer's numberMC230121
Manufacturer's date2021-03-01
NHTSA componentPOWER TRAIN

NHTSA's summary

Sealing ring on the differential cover of the reverser is leaking.

The document

The document is the manufacturer's. This site does not hold it. NHTSA files a document at one of these two addresses; we have not asked NHTSA which.

Components

Transmission and driveline

Vehicles listed
BMW K 1200 RS

Listing a model year does not mean every vehicle of it is concerned: the document says which.